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- Title
Basigin-2 is the predominant basigin isoform that promotes tumor cell migration and invasion and correlates with poor prognosis in epithelial ovarian cancer.
- Authors
Shu-Hua Zhao; Yu Wang; Li Wen; Zhen-Bo Zhai; Zhen-Hua Ai; Nian-Ling Yao; Li Wang; Wen-Chao Liu; Bi-Liang Chen; Yu Li; Hong Yang
- Abstract
Background: Basigin, which has four isoforms, has been demonstrated to be involved in progression of various human cancers. The aim of this study was to examine the prognostic value of basigin-2 protein expression in epithelial ovarian cancer. Furthermore, the function of basigin-2 in ovarian cancer was further investigated in cell culture models. Methods: Immunohistochemistry staining was performed to investigate basigin-2 expression in a total of 146 ovarian tissue specimens. Kaplan Meier analysis and Cox proportional hazards model were applied to assess the relationship between basigin-2 and progression-free survival (PFS) and overall survival (OS). Real-time PCR, RT-PCR and western blot were used to explore basigin-2, basigin-3 and basigin-4 expression in ovarian cancer cell lines and tissues. To evaluate possible contributions of basigin-2 to MMP secretion and cell migration and invasion, the overexpression vectors pcDNA3.1-basigin-2 and basigin-2 siRNA were transfected into HO-8910 and HO-8910 PM cells respectively. Results: High basigin-2 expression was associated with lymph-vascular space involvement, lymph node metastasis and poor prognosis of epithelial ovarian cancer. Multivariate analyses indicated that basigin-2 positivity was an independent prognostic factor for PFS (P = 0.006) and OS (P = 0.019), respectively. Overexpression of basigin-2 increased the secretion of MMP-2/9 and cancer cell migration and invasion of HO-8910 cells, whereas knockdown of basigin-2 reduced active MMP-2/9 production, migration and invasion of HO-8910 PM cells. Conclusions: The expression of basigin-2 might be an independent prognostic marker and basigin-2 inhibition would be a potential strategy for epithelial ovarian cancer patients, especially in inhibiting and preventing cancer cell invasion and metastasis.
- Subjects
MEMBRANE proteins; OVARIAN cancer; IMMUNOHISTOCHEMISTRY; CANCER invasiveness; CANCER cells; CELL migration
- Publication
Journal of Translational Medicine, 2013, Vol 11, Issue 1, p1
- ISSN
1479-5876
- Publication type
Article
- DOI
10.1186/1479-5876-11-92